Unit Subsystem - Aktakom ABM-4082 User Manual

6.3.6

UNIT Subsystem

The UNIT subsystem is used to configure and control the measurement units for ACV, and DCV, and is
summarized in Table 6-6.
Command
:UNIT
:VOLTage
:AC <name>
:DB
:REFerence <n>
:REFerence?
:DBM
:IMPedance <n>
:IMPedance?
:AC?
[:DC] <name>
:DB
:REFerence <n>
:REFerence?
:DBM
:IMPedance <n>
:IMPedance?
[:DC]?
:VOLTage Command
:AC <name>
Command Syntax:
:UNIT:VOLTage:AC <name>
Command parameter:
<name> = V
DB
DBM
Query:
:VOLTage:AC?
Description:
The command is used to select the units for ACV measurement. With volt (V) units selected, normal AC
voltage measurement are made for the ACV function. With DB units selected, AC dB voltage
measurements are performed. The DBM units selection is used to make decibel measurements
referenced to 1mW.
Table 6-6 UNIT Command Summary
Function description
Path to configure voltage unit
Select ACV measurement units (V, DB or DBM）
Path to set DB reference voltage
Specify reference in volts (1e-7 to 1000)
Query DB reference
Path to set DBM reference impedance
Specify reference impedance (1 to 9999)
Query DBM reference impedance
Query ACV units
Select DCV measurement units (V, DB, DBM)
Path to set DB reference voltage:
Specify reference in volts (0 to 1000)
Query DB reference voltage
Path to set DBM reference impedance:
Specify reference impedance (1e-7 to 1000)
Query DBM reference impedance
Query DCV units
AC voltage measurement units
dB AC voltage measurement units
dBm AC voltage measurement units
Query AC voltage units
ABM-4082
Default
V
1
75
V
1
75
85